Effect of environmental stress factors on ecophysiological traits and susceptibility to pathogens of five Populus clones throughout the growing season

Fernàndez-Martínez, Jordi; Zacchini, Massimo; González-Peñas, Elena; Fernández‐Marín, Beatriz; Fleck, Isabel

doi:10.1093/treephys/tpt039

Cited by 17 publications

(7 citation statements)

References 62 publications

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“…These differences are due to environmental conditions, which cause changes in the biochemical profile, genome methylation, or gene expression. These results were also supported by other investigators (Fernàndez‐Martínez, Zacchini, Elena, Fernández‐Marín, & Fleck, ; Smith, Burritt, & Bannister, ).…”

Section: Discussionsupporting

confidence: 88%

Molecular and chemical characterization of mutant and nonmutant genotypes of saffron grown in Saudi Arabia

Sharafeldin

Alam

Elkholy

2018

Food Science & Nutrition

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Saffron (Crocus sativus L.) is an important spice and medicinal plant that is cultivated in Asia, Europe, North Africa, and North America. Its morphological and biochemical parameters, such as the changes in the floral parts (six tepals, three stamens, three stigmata), biomass, and chlorophyll content, are primarily affected by environmental conditions. A polymerase chain reaction–rapid amplified polymorphic DNA (PCR‐RAPD) approach was used to analyze the extent of the polymorphisms between C. sativus genotypes grown in the Saudi climate. In this research study, the DNA fingerprints of the stigmata of C. sativus genotypes [K1 & K2 = C. sativus var. cashmerianus, C1 = C. sativus (nonmutant), T1 = mutant (T0‐2B), T2 = mutant (T1‐2B), T3 = mutant (T4‐2A)] were determined according to the floral parts, and a total of 10 decamer primers were used for PCR‐RAPD analysis. Only three pairs of arbitrary primers showed polymorphisms (33.3%–88.2%) in the total genomic DNA extracted from these genotypes. Jaccard's similarity index (JSI) ranged from 0.88 to 1.0. An unweighted pair group method with arithmetic mean (UPGMA) similarity and dendrogram matrix showed that two genotypes (T1‐2B and T4‐2A) were closely related to each other and to the strain CM‐cashmerianus, while the T0 of C. sativus genotype showed divergence.

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Section: Discussionsupporting

confidence: 88%

Molecular and chemical characterization of mutant and nonmutant genotypes of saffron grown in Saudi Arabia

Sharafeldin

Alam

Elkholy

2018

Food Science & Nutrition

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“…Concentrations of plant primary metabolites, including amino acids and sugars, for instance, vary substantially during growing season (Budzinski et al 2016;Riipi et al 2002) and are important determinants of plant quality for herbivores (Behmer 2009;Erb et al 2013). Moreover, seasonal changes in water supply can alter physiological characteristics such as turgor pressure (Mitchell et al 2008;Simpson et al 2012) and water content (Claussen 2005;Fernàndez-Martínez et al 2013) and, thereby, influence plant palatability (Huberty and Denno 2004). In addition, traits related to structural defenses including tissue toughness and cuticle thickness have been reported to vary across seasons (Gotsch et al 2010) and may contribute to circannual patterns of herbivore resistance (Peeters 2002;Uyi et al 2018).…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Impact of Seasonal and Temperature-Dependent Variation in Root Defense Metabolites on Herbivore Preference in Taraxacum officinale

et al. 2019

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Plants experience seasonal fluctuations in abiotic and biotic factors such as herbivore attack rates. If and how root defense expression co-varies with seasonal fluctuations in abiotic factors and root herbivore attack rates is not well understood. Here, we evaluated seasonal changes in defensive root latex chemistry of Taraxacum officinale plants in the field and correlated the changes with seasonal fluctuations in abiotic factors and damage potential by Melolontha melolontha, a major natural enemy of T. officinale. We then explored the causality and consequences of these relationships under controlled conditions. The concentration of the defensive sesquiterpene lactone taraxinic acid β-D glucopyranosyl ester (TA-G) varied substantially over the year and was most strongly correlated to mean monthly temperature. Both temperature and TAG levels were correlated with annual fluctuations in potential M. melolontha damage. Under controlled conditions, plants grown under high temperature produced more TAG and were less attractive for M. melolontha. However, temperature-dependent M. melolontha feeding preferences were not significantly altered in TAG deficient transgenic lines. Our results suggest that fluctuations in temperature leads to variation in the production of a root defensive metabolites that co-varies with expected attack of a major root herbivore. Temperature-dependent herbivore preference, however, is likely to be modulated by other phenotypic alterations.

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“…leaf rust (Melampsora sp.) and lace bug (Monosteira unicostata)), cold and drought adaptation (Fernandez-Martinez et al 2013).…”

Section: Phytoextraction and Phytostabilizationmentioning

confidence: 99%

Agronomic Practices for Improving Gentle Remediation of Trace Element-Contaminated Soils

Kidd

Mench

Álvarez-López

et al. 2015

International Journal of Phytoremediation

207

104

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The last few decades have seen the rise of Gentle soil Remediation Options (GRO), which notably include in situ contaminant stabilization ("inactivation") and plant-based (generally termed "phytoremediation") options. For trace element (TE)-contaminated sites, GRO aim to either decrease their labile pool and/or total content in the soil, thereby reducing related pollutant linkages. Much research has been dedicated to the screening and selection of TE-tolerant plant species and genotypes for application in GRO. However, the number of field trials demonstrating successful GRO remains well below the number of studies carried out at a greenhouse level. The move from greenhouse to field conditions requires incorporating agronomical knowledge into the remediation process and the ecological restoration of ecosystem services. This review summarizes agronomic practices against their demonstrated or potential positive effect on GRO performance, including plant selection, soil management practices, crop rotation, short rotation coppice, intercropping/row cropping, planting methods and plant densities, harvest and fertilization management, pest and weed control and irrigation management. Potentially negative effects of GRO, e.g., the introduction of potentially invasive species, are also discussed. Lessons learnt from long-term European field case sites are given for aiding the choice of appropriate management practices and plant species.

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Effect of environmental stress factors on ecophysiological traits and susceptibility to pathogens of five Populus clones throughout the growing season

Cited by 17 publications

References 62 publications

Molecular and chemical characterization of mutant and nonmutant genotypes of saffron grown in Saudi Arabia

Molecular and chemical characterization of mutant and nonmutant genotypes of saffron grown in Saudi Arabia

Impact of Seasonal and Temperature-Dependent Variation in Root Defense Metabolites on Herbivore Preference in Taraxacum officinale

Agronomic Practices for Improving Gentle Remediation of Trace Element-Contaminated Soils

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